#405BC9#405BC9

#405BC9 is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.4% C 0.173 H 269.1°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#405BC9
RGB	rgb(64, 91, 201)
HSL	hsl(228, 56%, 52%)
HSV	hsv(228, 68%, 79%)
CMYK	cmyk(68.2%, 54.7%, 0%, 21.2%)
CIE-LAB	lab(42.44, 26.42, -60.29)
CIE-LCH	lch(42.44, 65.82, 293.67°)
OKLab	oklab(51.37% -0.0029 -0.1734)
OKLCH	oklch(51.37% 0.173 269.1)
XYZ	xyz(16.3944, 12.7876, 56.8513)
Luminance	0.1279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405BC9 #C9AE40

analogous

#40A0C9 #405BC9 #6A40C9

triadic

#405BC9 #C9405B #5BC940

tetradic

#405BC9 #C940A0 #C9AE40 #40C96A

square

#405BC9 #C940A0 #C9AE40 #40C96A

split-complementary

#405BC9 #C96A40 #A0C940

monochromatic

#1F2F6F #2D439F #405BC9 #7084D6 #9FADE4

Accessibility & contrast

On white

5.90

#405BC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#405BC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405BC9

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405BC9	#FFFFFF	#000000	##FFFFFF
##405BC9	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BCD

Deuteranopia (green-blind)

#005EC7

Tritanopia (blue-blind)

#007689

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #405bc9;
/* rgb */ color: rgb(64, 91, 201);
/* oklch */ color: oklch(51.4% 0.173 269.1);

Tailwind

colors: {
  custom: {
    50: '#8589da',
    500: '#405bc9',
    950: '#000000',
  },
}

SCSS

$custom: #405bc9;
$custom-light: #8589da;
$custom-dark: #000000;

JSON

{
  "hex": "#405bc9",
  "rgb": {
    "r": 64,
    "g": 91,
    "b": 201
  },
  "hsl": {
    "h": 228.175,
    "s": 55.918,
    "l": 51.961
  },
  "oklch": {
    "l": 0.51374,
    "c": 0.17347,
    "h": 269.1
  },
  "luminance": 0.12789
}

Semantic roles & 50–950 ramp

primary

#405BC9

secondary

#D0C594

accent

#C249DF

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #405BC9

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →